Application Credential support

Signed-off-by: Veronika Fisarova <[email protected]>

Author: Deydra71

api/go.mod

@@ -95,3 +95,5 @@ replace k8s.io/component-base => k8s.io/component-base v0.31.13 //allow-merging
 replace github.com/rabbitmq/cluster-operator/v2 => github.com/openstack-k8s-operators/rabbitmq-cluster-operator/v2 v2.6.1-0.20250929174222-a0d328fa4dec //allow-merging
 
 replace k8s.io/kube-openapi => k8s.io/kube-openapi v0.0.0-20250627150254-e9823e99808e //allow-merging
+
+replace github.com/openstack-k8s-operators/keystone-operator/api => github.com/Deydra71/keystone-operator/api v0.0.0-20251103091514-244e15fe5d63

controllers/cinder_controller.go

@@ -1031,6 +1031,17 @@ func (r *CinderReconciler) generateServiceConfigs(
 	templateParameters["ServicePassword"] = string(ospSecret.Data[instance.Spec.PasswordSelectors.Service])
 	templateParameters["KeystoneInternalURL"] = keystoneInternalURL
 	templateParameters["KeystonePublicURL"] = keystonePublicURL
+
+	// Check for Application Credentials
+	Log := r.GetLogger(ctx)
+	if acData, err := keystonev1.GetApplicationCredentialFromSecret(ctx, h.GetClient(), instance.Namespace, cinder.ServiceName); err != nil {
+		Log.Error(err, "Failed to get ApplicationCredential for service", "service", cinder.ServiceName)
+		return err
+	} else if acData != nil {
+		templateParameters["ApplicationCredentialID"] = acData.ID
+		templateParameters["ApplicationCredentialSecret"] = acData.Secret
+		Log.Info("Using ApplicationCredentials auth", "service", cinder.ServiceName)
+	}
 	templateParameters["TransportURL"] = transportURLSecretData
 	templateParameters["DatabaseConnection"] = fmt.Sprintf("mysql+pymysql://%s:%s@%s/%s?read_default_file=/etc/my.cnf",
 		databaseAccount.Spec.UserName,

controllers/cinderapi_controller.go

@@ -338,6 +338,42 @@ func (r *CinderAPIReconciler) SetupWithManager(ctx context.Context, mgr ctrl.Man
 		return err
 	}
 
+	// Application Credential secret watching function
+	acSecretFn := func(_ context.Context, o client.Object) []reconcile.Request {
+		name := o.GetName()
+		ns := o.GetNamespace()
+		result := []reconcile.Request{}
+
+		// Only handle Secret objects
+		if _, isSecret := o.(*corev1.Secret); !isSecret {
+			return nil
+		}
+
+		// Check if this is a cinder AC secret by name pattern (ac-cinder-secret)
+		expectedSecretName := keystonev1.GetACSecretName("cinder")
+		if name == expectedSecretName {
+			// get all CinderAPI CRs in this namespace
+			cinderAPIs := &cinderv1beta1.CinderAPIList{}
+			listOpts := []client.ListOption{
+				client.InNamespace(ns),
+			}
+			if err := r.List(context.Background(), cinderAPIs, listOpts...); err != nil {
+				return nil
+			}
+
+			// Enqueue reconcile for all cinder API instances
+			for _, cr := range cinderAPIs.Items {
+				objKey := client.ObjectKey{
+					Namespace: ns,
+					Name:      cr.Name,
+				}
+				result = append(result, reconcile.Request{NamespacedName: objKey})
+			}
+		}
+
+		return result
+	}
+
 	return ctrl.NewControllerManagedBy(mgr).
 		For(&cinderv1beta1.CinderAPI{}).
 		Owns(&keystonev1.KeystoneService{}).
@@ -352,6 +388,8 @@ func (r *CinderAPIReconciler) SetupWithManager(ctx context.Context, mgr ctrl.Man
 			handler.EnqueueRequestsFromMapFunc(r.findObjectsForSrc),
 			builder.WithPredicates(predicate.ResourceVersionChangedPredicate{}),
 		).
+		Watches(&corev1.Secret{},
+			handler.EnqueueRequestsFromMapFunc(acSecretFn)).
 		Watches(&topologyv1.Topology{},
 			handler.EnqueueRequestsFromMapFunc(r.findObjectsForSrc),
 			builder.WithPredicates(predicate.GenerationChangedPredicate{})).
@@ -701,6 +739,11 @@ func (r *CinderAPIReconciler) reconcileNormal(ctx context.Context, instance *cin
 		return ctrlResult, nil
 	}
 
+	// Check for Application Credentials
+	if ctrlResult, err = keystonev1.VerifyApplicationCredentialsForService(ctx, r.Client, instance.Namespace, "cinder", &configVars, cinder.NormalDuration); err != nil || ctrlResult.RequeueAfter > 0 {
+		return ctrlResult, err
+	}
+
 	//
 	// check for required Transport URL and config secrets
 	//

go.mod

@@ -116,3 +116,5 @@ replace k8s.io/component-base => k8s.io/component-base v0.31.13 //allow-merging
 replace github.com/rabbitmq/cluster-operator/v2 => github.com/openstack-k8s-operators/rabbitmq-cluster-operator/v2 v2.6.1-0.20250929174222-a0d328fa4dec //allow-merging
 
 replace k8s.io/kube-openapi => k8s.io/kube-openapi v0.0.0-20250627150254-e9823e99808e //allow-merging
+
+replace github.com/openstack-k8s-operators/keystone-operator/api => github.com/Deydra71/keystone-operator/api v0.0.0-20251103091514-244e15fe5d63

go.sum

@@ -1,3 +1,5 @@
+github.com/Deydra71/keystone-operator/api v0.0.0-20251103091514-244e15fe5d63 h1:ug2YPMQJ/+0ifOjFyaPx1YtX0zsVnL02pB2ngacYviw=
+github.com/Deydra71/keystone-operator/api v0.0.0-20251103091514-244e15fe5d63/go.mod h1:FMFoO4MjEQ85JpdLtDHxYSZxvJ9KzHua+HdKhpl0KRI=
 github.com/Masterminds/semver/v3 v3.4.0 h1:Zog+i5UMtVoCU8oKka5P7i9q9HgrJeGzI9SA1Xbatp0=
 github.com/Masterminds/semver/v3 v3.4.0/go.mod h1:4V+yj/TJE1HU9XfppCwVMZq3I84lprf4nC11bSS5beM=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
@@ -100,8 +102,6 @@ github.com/openshift/api v0.0.0-20250711200046-c86d80652a9e h1:E1OdwSpqWuDPCedyU
 github.com/openshift/api v0.0.0-20250711200046-c86d80652a9e/go.mod h1:Shkl4HanLwDiiBzakv+con/aMGnVE2MAGvoKp5oyYUo=
 github.com/openstack-k8s-operators/infra-operator/apis v0.6.1-0.20251030184102-82d2cbaafd35 h1:QFFGu93A+XCvDUxZIgfBE4gB5hEdVQAIw+E8dF1kP/E=
 github.com/openstack-k8s-operators/infra-operator/apis v0.6.1-0.20251030184102-82d2cbaafd35/go.mod h1:qq8BCRxTEmLRriUsQ4HeDUzqltWg32MQPDTMhgbBGK4=
-github.com/openstack-k8s-operators/keystone-operator/api v0.6.1-0.20251027074845-ed8154b20ad1 h1:QohvX44nxoV2GwvvOURGXYyDuCn4SCrnwubTKJtzehY=
-github.com/openstack-k8s-operators/keystone-operator/api v0.6.1-0.20251027074845-ed8154b20ad1/go.mod h1:FMFoO4MjEQ85JpdLtDHxYSZxvJ9KzHua+HdKhpl0KRI=
 github.com/openstack-k8s-operators/lib-common/modules/common v0.6.1-0.20251027074416-ab5c045dbe00 h1:Xih6tYYqiDVllo4fDGHqTPL+M2biO5YLOUmbiTqrW/I=
 github.com/openstack-k8s-operators/lib-common/modules/common v0.6.1-0.20251027074416-ab5c045dbe00/go.mod h1:PMoNILOdQ1Ij7DyrKgljN6RAiq8pFM2AGsUb6mcxe98=
 github.com/openstack-k8s-operators/lib-common/modules/openstack v0.6.1-0.20251021145236-2b84ec9fd9bb h1:wToXqX7AS1JV3Kna7RcJfkRart8rSGun2biKNfyY6Zg=

templates/cinder/config/00-global-defaults.conf

@@ -76,12 +76,18 @@ auth_url = {{ .KeystoneInternalURL }}
 memcached_servers = {{ .MemcachedServers }}
 memcache_pool_dead_retry = 10
 memcache_pool_conn_get_timeout = 2
+{{ if (index . "ApplicationCredentialID") -}}
+auth_type = v3applicationcredential
+application_credential_id = {{ .ApplicationCredentialID }}
+application_credential_secret = {{ .ApplicationCredentialSecret }}
+{{ else -}}
 auth_type = password
+username = {{ .ServiceUser }}
+password = {{ .ServicePassword }}
+{{ end -}}
 project_domain_name = Default
 user_domain_name = Default
 project_name = service
-username = {{ .ServiceUser }}
-password = {{ .ServicePassword }}
 service_token_roles_required = true
 interface = internal
 {{if (index . "MemcachedAuthCert")}}
@@ -93,20 +99,32 @@ memcache_tls_enabled = true
 
 [nova]
 interface = internal
+{{ if (index . "ApplicationCredentialID") -}}
+auth_type = v3applicationcredential
+application_credential_id = {{ .ApplicationCredentialID }}
+application_credential_secret = {{ .ApplicationCredentialSecret }}
+{{ else -}}
 auth_type = password
-auth_url = {{ .KeystoneInternalURL }}
 username = {{ .ServiceUser }}
 password = {{ .ServicePassword }}
+{{ end -}}
+auth_url = {{ .KeystoneInternalURL }}
 user_domain_name = Default
 project_name = service
 project_domain_name = Default
 
 [service_user]
 send_service_user_token = True
 auth_url = {{ .KeystoneInternalURL }}
+{{ if (index . "ApplicationCredentialID") -}}
+auth_type = v3applicationcredential
+application_credential_id = {{ .ApplicationCredentialID }}
+application_credential_secret = {{ .ApplicationCredentialSecret }}
+{{ else -}}
 auth_type = password
+username = {{ .ServiceUser }}
+password = {{ .ServicePassword }}
+{{ end -}}
 project_domain_name = Default
 user_domain_name = Default
 project_name = service
-username = {{ .ServiceUser }}
-password = {{ .ServicePassword }}

test/functional/cinder_controller_test.go

@@ -29,6 +29,7 @@ import (
 
 	corev1 "k8s.io/api/core/v1"
 	k8s_errors "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/utils/ptr"
@@ -37,9 +38,11 @@ import (
 	"github.com/openstack-k8s-operators/cinder-operator/pkg/cinder"
 	memcachedv1 "github.com/openstack-k8s-operators/infra-operator/apis/memcached/v1beta1"
 	topologyv1 "github.com/openstack-k8s-operators/infra-operator/apis/topology/v1beta1"
+	keystonev1 "github.com/openstack-k8s-operators/keystone-operator/api/v1beta1"
 	condition "github.com/openstack-k8s-operators/lib-common/modules/common/condition"
 	util "github.com/openstack-k8s-operators/lib-common/modules/common/util"
 	mariadb_test "github.com/openstack-k8s-operators/mariadb-operator/api/test/helpers"
+	mariadbv1 "github.com/openstack-k8s-operators/mariadb-operator/api/v1beta1"
 )
 
 var _ = Describe("Cinder controller", func() {
@@ -1744,4 +1747,125 @@ var _ = Describe("Cinder Webhook", func() {
 			return instance, fmt.Sprintf("cinderVolumes[%s].topologyRef", instance)
 		}),
 	)
+
+	When("An ApplicationCredential is created for Cinder", func() {
+		var (
+			acName                string
+			acSecretName          string
+			servicePasswordSecret string
+			passwordSelector      string
+		)
+		BeforeEach(func() {
+			servicePasswordSecret = "ac-test-osp-secret" //nolint:gosec // G101
+			passwordSelector = "CinderPassword"
+
+			DeferCleanup(k8sClient.Delete, ctx,
+				CreateCinderMessageBusSecret(
+					cinderTest.Instance.Namespace,
+					cinderTest.RabbitmqSecretName,
+				),
+			)
+			DeferCleanup(k8sClient.Delete, ctx,
+				CreateCinderSecret(
+					cinderTest.Instance.Namespace, servicePasswordSecret))
+			// Create Cinder using the service password secret
+			spec := GetDefaultCinderSpec()
+			spec["secret"] = servicePasswordSecret
+			DeferCleanup(th.DeleteInstance, CreateCinder(cinderTest.Instance, spec))
+			DeferCleanup(
+				mariadb.DeleteDBService,
+				mariadb.CreateDBService(
+					cinderTest.Instance.Namespace,
+					GetCinder(cinderTest.Instance).Spec.DatabaseInstance,
+					corev1.ServiceSpec{
+						Ports: []corev1.ServicePort{{Port: 3306}}}))
+			DeferCleanup(keystone.DeleteKeystoneAPI,
+				keystone.CreateKeystoneAPI(cinderTest.Instance.Namespace),
+			)
+			DeferCleanup(infra.DeleteMemcached, infra.CreateMemcached(cinderTest.Instance.Namespace, MemcachedInstance, memcachedv1.MemcachedSpec{}))
+			infra.SimulateMemcachedReady(cinderTest.CinderMemcached)
+
+			// Create MariaDB account and database
+			acc, accSecret := mariadb.CreateMariaDBAccountAndSecret(cinderTest.Database, mariadbv1.MariaDBAccountSpec{})
+			DeferCleanup(k8sClient.Delete, ctx, acc)
+			DeferCleanup(k8sClient.Delete, ctx, accSecret)
+			mariadb.CreateMariaDBDatabase(cinderTest.Database.Namespace, cinderTest.Database.Name, mariadbv1.MariaDBDatabaseSpec{})
+			DeferCleanup(k8sClient.Delete, ctx, mariadb.GetMariaDBDatabase(cinderTest.Database))
+
+			acName = fmt.Sprintf("ac-%s", cinder.ServiceName)
+			acSecretName = acName + "-secret"
+			secret := &corev1.Secret{
+				ObjectMeta: metav1.ObjectMeta{
+					Namespace: cinderTest.Instance.Namespace,
+					Name:      acSecretName,
+				},
+				Data: map[string][]byte{
+					"AC_ID":     []byte("test-ac-id"),
+					"AC_SECRET": []byte("test-ac-secret"),
+				},
+			}
+			DeferCleanup(k8sClient.Delete, ctx, secret)
+			Expect(k8sClient.Create(ctx, secret)).To(Succeed())
+
+			ac := &keystonev1.KeystoneApplicationCredential{
+				ObjectMeta: metav1.ObjectMeta{
+					Namespace: cinderTest.Instance.Namespace,
+					Name:      acName,
+				},
+				Spec: keystonev1.KeystoneApplicationCredentialSpec{
+					UserName:         cinder.ServiceName,
+					Secret:           servicePasswordSecret,
+					PasswordSelector: passwordSelector,
+					Roles:            []string{"admin", "member"},
+					AccessRules:      []keystonev1.ACRule{{Service: "identity", Method: "POST", Path: "/auth/tokens"}},
+					ExpirationDays:   30,
+					GracePeriodDays:  5,
+				},
+			}
+			DeferCleanup(k8sClient.Delete, ctx, ac)
+			Expect(k8sClient.Create(ctx, ac)).To(Succeed())
+
+			fetched := &keystonev1.KeystoneApplicationCredential{}
+			key := types.NamespacedName{Namespace: ac.Namespace, Name: ac.Name}
+			Expect(k8sClient.Get(ctx, key, fetched)).To(Succeed())
+
+			fetched.Status.SecretName = acSecretName
+			now := metav1.Now()
+			readyCond := condition.Condition{
+				Type:               condition.ReadyCondition,
+				Status:             corev1.ConditionTrue,
+				Reason:             condition.ReadyReason,
+				Message:            condition.ReadyMessage,
+				LastTransitionTime: now,
+			}
+			fetched.Status.Conditions = condition.Conditions{readyCond}
+			Expect(k8sClient.Status().Update(ctx, fetched)).To(Succeed())
+
+			infra.SimulateTransportURLReady(cinderTest.CinderTransportURL)
+			mariadb.SimulateMariaDBAccountCompleted(cinderTest.Database)
+			mariadb.SimulateMariaDBDatabaseCompleted(cinderTest.Database)
+
+			th.SimulateJobSuccess(cinderTest.CinderDBSync)
+
+			keystone.SimulateKeystoneEndpointReady(cinderTest.CinderKeystoneEndpoint)
+		})
+
+		It("should render ApplicationCredential auth in 00-global-defaults.conf", func() {
+			keystone.SimulateKeystoneEndpointReady(cinderTest.CinderKeystoneEndpoint)
+
+			Eventually(func(g Gomega) {
+				cfgSecret := th.GetSecret(cinderTest.CinderConfigSecret)
+				g.Expect(cfgSecret).NotTo(BeNil())
+
+				conf := string(cfgSecret.Data["00-global-defaults.conf"])
+
+				g.Expect(conf).To(ContainSubstring(
+					"application_credential_id = test-ac-id"),
+				)
+				g.Expect(conf).To(ContainSubstring(
+					"application_credential_secret = test-ac-secret"),
+				)
+			}, timeout, interval).Should(Succeed())
+		})
+	})
 })